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. 2021 Sep 21:1–9. doi: 10.1159/000518672

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Copyright © 2021 by S. Karger AG, Basel

This article is made available via the PMC Open Access Subset for unrestricted re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for the duration of the COVID-19 pandemic or until permissions are revoked in writing. Upon expiration of these permissions, PMC is granted a perpetual license to make this article available via PMC and Europe PMC, consistent with existing copyright protections.

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Fig. 2 — a Measurement of right and left olfactory cleft volumes on coronal plane. During segmentation, structures with air and soft tissue density are included. b Measurement of right and left olfactory cleft volumes on axial plane, depicting the anterior and posterior margins of olfactory cleft. c 3D volumetric images illustrate right and left olfactory cleft volume measurements and mean density of volume of interest.